function doSearch(){
	        with(form1){
	            if (keyword.value==""){
	                alert("Can not empty");
	                keyword.focus(); 
	                return false;
	            }
	            
	            if (keyword.value.length<2){
	                alert("More than two words");
	                keyword.focus(); 
	                return false;
	            }
	            
	            var url = "/ProductQ.aspx?keyword=" + keyword.value;

	            form1.action = url
	            form1.submit();
	        }
	    } 
	    
	    function doSubmit(){	    
	        if(event.keyCode==13){
	            doSearch();
	        }	    
	    }